3/4"-10 x 4‑1/2" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 3/4"-10 x 4‑1/2" heavy hex head cap screw is manufactured from Stainless Steel 304 and certified to ASTM A193 Grade B8, Class 1, making it a dependable fastener for heavy‑duty industrial and structural applications where corrosion resistance is required. The partial‑thread (PT) design features an extended unthreaded shank that improves shear strength and alignment in bolted joints, especially in thick or multi‑layer assemblies. Its longer 4‑1/2" length supports deep engagement through substantial materials, while the heavy hex head provides increased bearing surface and enhanced wrenching leverage for controlled torque application. Commonly specified for piping systems, flanged connections, equipment mounting, and structural fabrication, this stainless cap screw offers excellent resistance to rust, oxidation, and environmental exposure, delivering long‑term performance in indoor, outdoor, and moderately corrosive environments.